download tvb.com mytv video, download mytv, download tvb, 下載 tvb, 下載 mytv

http://www.nirsoft.net/utils/rtmp_dump_helper.html
http://github.com/downloads/svnpenn/rtmpdump/rtmpdump-v2.4-35-ge0056c5-master.7z
http://rtmpdump.mplayerhq.hu/download/rtmpdump-2.4-git-010913-windows.zip

launch rtmpdumphelper and rtmpsuck manually
open url in a 32-bit browser (opera 32-bit, internet explorer 32-bit, firefox, chrome), 64-bit dll can't inject yet, (your flash is always 32-bit) 12-08-19 test of rtmpdumphelper v1.11 on mytv failed on my chome 21 ??!
fallback to the rtmpsuck - proxy server method, read the README file of rtmpdump, `Example Servers` section for more information.
And I created some shots may help
https://groups.google.com/d/topic/mytv_get_forum/NN5rWn61jxc/discussion
you need to read this as well
https://groups.google.com/forum/#!topic/mytv_get_forum/nFtKoiyMM7k/discussion

no binary for windows?!
nightly binary for windows
then compile rtmp on cygwin (simplest),
svn co svn://svn.mplayerhq.hu/rtmpdump/trunk rtmpdump 12-08-20
wget http://apt-cyg.googlecode.com/svn/trunk/apt-cyg
chmod +x apt-cyg
mv apt-cyg /usr/local/bin/
apt-cyg install openssl-devel
git clone git://git.ffmpeg.org/rtmpdump
cd rtmpdump

make && make install

./rtmpsuck.exe

http://apt-cyg.googlecode.com/
http://superuser.com/questions/41093/installing-cygwin-packages-from-the-command-line
http://www.fir3net.com/Cygwin/cygwin-package-installation.html
http://rtmpdump.mplayerhq.hu/